At first glance, these images look like like photos of glaciers and icebergs afloat on tranquil and frigid seas. The truth is somewhat more interesting, however – they're enormous finger pastel drawings by U.S. artist Zaria Forman.

Believe it or not, that picture of Morgan Freeman is not a photo – it's a finger painting. UK-based artist Kyle Lambert finger-paints (or finger-draws, if you're a purist) extraordinarily photo-realistic portraits of famous Hollywood stars on his iPad. Although the...